mains



J. F. MAINS. FUEL lGAS BURNER.

No. 461,886. Patented 001;. 27, 1.891.

nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn cA UNITED STATES PATENTOFFICE.

JOHN F. MAINS, OF INDIANAPOLIS, INDIANA, ASSIGNOR OF THREE-FOURTHS TOBRUCE CARR, HARVEY M. LA FOLLETTE, AND EDVARD I. ROBISON,

ALL OF SAME PLACE.

FUEL-GAS BURNER.

SPECIFICATION forming part of Letters Patent No. 461,886, dated October27, 1891.

I Application led January 2, 1891. Serial No. 376,482. (No model.)

l'o all whom it may concern.-

Be it known that I, JOHN F. MAINS, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented a new and useful Improvement in Fuel-Gas Burners, of whichthe following is a specification.

My invention relates to an improved fuelgas burner.

The object of my improvement is, first, to so construct the burner thatits several parts may be easily molded, and will, when placed together,provide means for the egress and proper distribution of the gas indifferent vertical planes without drilling or the use of othermachine-work, and, second, to provide means for holdlng the severalparts of the burner together,which shall be concealed from view andprotected from the action of the re.

The accompanying drawings illustrate my invention.

Figure 1 is a plan having the top plate re moved; Fig. 2, a sideelevation, and Fig. 3 a

central vertical section. Fig. 4 is a plan of a modified form of theburner.

A is a cast plate having a slightly-raised peripheral edge, in which isa series of shallow notches b b, and having also at its center anopening C for the ingress of the gas,\vhich opening is spanned by araised open bridge D. Plate A is preferably circular in shape; but itmay be oblong, as in Fig. 4, or any other suitable shape. Arranged aboveand resting upon plate A is an annular tapered ring E, having at itslower edge a radially-projecting flange F and having in its upper edge aseries of shallow notches h, similar to the notches b in plate A.Arranged above ring Eis a ring I of similar construction but stnallerindiameter. Any desired number of rings like E and I maybe mounted onplate A, the rings forming the symmetrically-tapered side'walls of theburner, in which the notches b and h form the openingsfor the egress ofthe gas, which is caused to spread outward by the anges F. The rings areheld in position concentric with each otherA and with the plate A byshort lugsj, formed upon one and engaging the inner surface of theother. The upper lring is surmounted by a top plate L, havingl a centralrecess or socket M and a central opening N. The base-plate A and tcpplate L are clamped together, thus holding the rings E and I in placebetween them by an ordinary carriage-bolt O, which is passed upwardthrough the interior bridge D on plate A into the recess M in the topplate L, Where it receives the nut P. The recess is then iilled with aiire-proof cement. By this construction the bolt is concealed and isprotected from the action of the tire. The separate tapered annularrings having openings between them form the side Walls of the burner,having outlets in dierent vertical plane-s for the egress of the gas, sothat Vone does not interfere with the other, and they Aare easily andcheaply molded, so that any machine-work on them is renderedunnecessary.

I claim as my invention- 1. The above-described fuel-gas burner,consisting of the base-plate having an inlet-opening spanned by the openbridge D and on its upper side the notches b, the series of annulartapered rings, each having at its base a horizontally-proj ectingcontinuous flange and a series of notches formed in its upper edge, saidrings forming together the inwardly-inclined valls ot the burner, havinga series of gas-outlets arranged in different vertical planes, the topplate covering the uppermost of said rings and projecting radiallybeyond it, and the binding-bolt, all constructed and arranged as shownand described.

2. In a fuel-gas burner, the combination of the base-plate having theinterior open bridge D, the annular notched rings forming the side wallsof the burner, and the top plate having the recess M, bolt O, and nut P,all arranged to co-operate substantially as set forth.

JOI-IN F. MAINS.

Witnesses:

H. P. Hoon, A. M. Hoon.

